685499084 has 24 divisors (see below), whose sum is σ = 1254839040. Its totient is φ = 327046544.

The previous prime is 685499069. The next prime is 685499099. The reversal of 685499084 is 480994586.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (685499069) and next prime (685499099).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29657 + ... + 47439.

It is an arithmetic number, because the mean of its divisors is an integer number (52284960).

Almost surely, 2^685499084 is an apocalyptic number.

It is an amenable number.

685499084 is a deficient number, since it is larger than the sum of its proper divisors (569339956).

685499084 is a wasteful number, since it uses less digits than its factorization.

685499084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18229 (or 18227 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 53.

The square root of 685499084 is about 26182.0374302689. The cubic root of 685499084 is about 881.7300178217.

The spelling of 685499084 in words is "six hundred eighty-five million, four hundred ninety-nine thousand, eighty-four".